Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income	$ 107,315	$ 4,961
Depreciation and amortization	287,068	275,241
Gain on sale of real estate	(108,109)	0
Other operating activities and non-cash items	(3,787)	(6,177)
Changes in assets and liabilities	(82,528)	(826)
Net cash provided by operating activities	199,959	273,199
Cash flows from investing activities:
Payments for property, plant and equipment	(271,651)	(355,974)
Proceeds from sale of property, plant and equipment	130,962	593
Acquisition of business, net of cash acquired	(43,771)	0
Other investing activities	(2,117)	(830)
Net cash used in investing activities	(186,577)	(356,211)
Cash flows from financing activities:
Proceeds from revolving credit facilities	75,000	115,000
Payments of revolving credit facilities	0	(100,000)
Proceeds from short-term debt	41,228	24,630
Payments of short-term debt	(32,110)	(23,035)
Proceeds from issuance of long-term debt	215,086	34,000
Payments of long-term debt	(207,653)	(8,582)
Payment of deferred consideration for purchase of facility	(3,890)	0
Payments of capital lease obligations	(2,665)	(887)
Other financing activities	561	(604)
Net cash provided by financing activities	85,557	40,522
Effect of exchange rate fluctuations on cash, cash equivalents and restricted cash	9,418	18,782
Net increase (decrease) in cash, cash equivalents and restricted cash	108,357	(23,708)
Cash, cash equivalents and restricted cash, beginning of period	555,495	527,348
Cash, cash equivalents and restricted cash, end of period	663,852	503,640
Non-cash investing and financing activities:
Property, plant and equipment included in capital expenditures payable	$ 233,084	$ 174,758